Talc (Mg3H2(SiO3)4)

Flammability

Link to relevant study record(s)

Reference

Endpoint:

flammable solids

Remarks:

Talc (Mg3H2(SiO3)4 is an inorganic solid which is not combustible and is stable

Data waiving:

study technically not feasible

Justification for data waiving:

the study does not need to be conducted because the substance is a solid

other:

Description of key information

Talc (Mg3H2(SiO3)4 is an inorganic solid which is not combustible and is stable: Talc (Mg3H2(SiO3)4 can be used as a fire-extinguishing agent.

Key value for chemical safety assessment

Flammability:

not classified

Additional information

Flammability Justification For data Waiving (ECHA TGD ref 7.1.10)   From the compositional description and the structural formula given, it can be concluded that this substance CAS 14807-96-6 , (EINECS) 238-877-9 is not pyrophoric (will not ignite or emit flammable gases on contact with air, damp air, or water) nor does it exhibit the property of flammability (will not easily burn when ignited or contribute to the combustion of other materials). There are no functional groups or other structural alerts present that would support any concern that this substance should be classified as dangerous according to the criteria for evaluating flammability, which is furthermore confirmed by long term handling experience. According “ANNEX VII - STANDARD INFORMATION REQUIREMENTS FOR SUBSTANCES MANUFACTURED OR IMPORTED IN QUANTITIES OF ONE TONNE OR MORE” the study does not need to be conducted if the substance is incapable of reacting exothermically with combustible materials, on the basis of the chemical structure. This product is mostly nonflammable and non-combustible. The substance is from Non-Redox-Active Inorganic Compounds. Its functional groups indicate no Flammability . Flammability is not considered critical. Materials in this group are generally nonflammable.  EU Test method A17 for determination of Flammability states that the test need not be performed when examination of the structural formula established beyond reasonable doubt that the substance is in capable of reacting exothermically with a combustible material. 

Justification for classification or non-classification

Based on the hazard assessment of Talc (Mg3H2(SiO3)4) in section 2.1 and 2.2 in IUCLID6, available data for the substance and according to the criteria described in Directive 67/548/EEC and in the Regulation (EC) No 1272/2008 on classification, labelling and packaging of substances and mixtures (CLP Regulation):

 

  

Directive 67/548

E;R2 Risk of explosion by shock, friction, fire or other sources of ignition E;R3 Extreme risk of explosion by shock, friction, fire or other source of ignition O; R7 May cause fire O; R8 Contact with combustible material may cause fire O; R9 Explosive when mixed with combustible material F+; R12 Extremely flammable F; R11 Highly flammable F; R15 Contact with water liberates extremely flammable gas F; R17 Spontaneously flammable in air R10 Flammable

CLP Regulation

H242 Org. Perox. CD Heating may cause a fire H242 Org. Perox. EF Heating may cause a fire Gas: H270 Ox. Gas 1: May cause or intensify fire; oxidiser Liquid: H271 Ox. Liq 1 May cause fire or explosion; strong oxidiser Solid: H271 Ox. Sol 1 May cause fire or explosion; strong oxidiser H272: May intensify fire; oxidiser Gas: H220 Flam. Gas 1: extremely flammable gas Gas: H221 Flam. Gas 2: flammable gas Aerosol: H222 Category 1: extremely flammable aerosol Aerosol:H223 category 2: flammable aerosol Liquid: H224 Flam. Liq. 1 H242 Self-react. CD: Heating may cause a fire H242 Self-react. EF: Heating may cause a fire None Self-react. G Liquid: H224 Flam. Liq. 1, if initial boiling point <35ºC Liquid: H225 Flam. Liq. 2, if initial boiling point >35ºC Solid: H228: Flammable solid Solid: H250, Pyr. Liq. 1: Catches fire spontaneously if exposed to air Liquid: H250, Pyr. Sol. 1: Catches fire spontaneously if exposed to air Liquid: H224 Flam. Liq. 1, if flashpoint<23ºC and initial boiling point<35ºC Liquid: H225 Flam. Liq. 2, if flashpoint<23ºC and initial boiling point>35ºC Liquid: H226 Flam. Liq. 3, if flashpoint>23ºC H200: unstable explosive H201: explosive; mass explosion hazard H202: explosive; severe projection hazard H203: explosive; fire, blast or projection hazard H204: Fire or projection hazard H205: may mass explode in fire H280: contains gas under pressure; may explode if heated H281: contains refrigerated gas; may cause cryogenic burns or injury H240: heating may cause an explosion H241: Heating may cause a fire or explosion H251: Self-heating; may catch fire H252: Self-heating in large quantities; may catch fire H260: In contact with water releases flammable gases which may ignitespontaneously H261: In contact with water releases flammable gases H290: May be corrosive to metals

 

It is concluded that none of the above phrase has not to be assigned toTalc (Mg3H2(SiO3)4) and  does not meet the criteria to be classified for flammability.